Steam regenerative accumulator.



D. B. MORISON.

STEAM REGENERATIVE ACGUMULATOR.

APPLICATION FILED MAR. s, 1911.

Patented May 5, 1914.

DONALD BARNS MORISON, OF HARTLEPObL, ENGLAND;

STEAM REGENERATIVE ACCUIVIULATOR.

Specification of Letters Patent.

Application filed March 8, 1911. Serial No. 613,056.

To aZZ whom it may concern:

Be it known that I, DONALD BARNS MOB} son, a subject of the King of Great Britain and Ireland, residing at Hartlepool, in the county of Durham, England, have invented a Steam Regenerative Accumulator, of which the following is a specification.

My invention relates to heat storage and steam regenerating apparatus and has for object to beneficially utilize surplus steam which ordinarily escapes to the atmosphere through a safety valve, by causing such surplus steam or a part thereof, when a desired pressure is reached, to beneficially heat liquid, for example boiler feed water, and so increase the thermal etliciency of the system, the resistance being provided by a valve or by a head of water or by both in combination.

My invention may be carried out in various ways and is generally applicable to steam regenerative accumulators of any type.

The accompanying drawings illustrate diagrammatically applications of my invention to a steam regenerative accumulator of the type in which the exhaust steam passes into a body of water. Figure 1 being a longitudinal section partly in elevation, Fig. 2 a longitudinal section of a modification with certain parts omitted, and Fig. 3 a sectional detail view illustrating a further modification.

In Fig. 1, a is a high pressure steam engine, Z) its exhaust pipe, 0 the heat accumulator, (Z its submerged nozzles, e the regenerated steam outlet pipe, f a low pressure turbine and g a condenser. h is a chamber into which boiler feed water is delivered through a pipe 2' from any suitable source and from which it passes out through a pipe 3'; submerged in the feed water are heating nozzles k through which steam from the ex haust pipe I) flows; the head of water above the nozzles 76 corresponding to the depth at which the steam outlets therefrom are submerged below the water level in the chamber h, ofiers a higher resistance to the discharge of steam from the nozzles 71; than from the nozzles (Z which have their steam outlets submerged at a lesser depth below the level of the water in the accumulator e and therefore the steam from the exhaust pipe Z) preferentially passes through the nozzles (Z into the water in the'accumulator, but when the pressure in the steam space of the accumulator increases and the resistance to the flow of steam from the nozzles (Z is equal to a predetermined pressure corresponding to the total resistance to flow throughthe nozzles 70, the surplus steam passes toand heats water in the chamber h. The chamber b has connected to it the pipe Z through which any uncondensed steam may escape to the atmosphere, and the heat accumulator c is provided with a safety valve a, which may be arranged to operate in combination with the heating nozzles 76 either in series or in parallel.

hen the pressure of the head of water represented by the vertical distance from the level of the water in the chamber h to the horizontal portion of the pipe 5 is less than that corresponding to the low limit of pres sure in the pipe Z) a non-return valve m is provided so as to prevent the back flow of water from the chamber it into the steam supply system when such low limit pressure is reached.

According to the arrangement illustrated in 1 steam passes from the exhaust pipe I) through the nozzles 03 and into the water in the heat accumulator 0, but when the volume of the steam flowing through the exhaust pipe Z) is greater than can be utilized by the low pressure turbine g and the heat accumulator c, then the pressure in the steam space of the accumulator rises until the pressure in the exhaust pipe I) is greater than the back pressure offered to the escape of steam through the valve m and nozzles is, when steam will pass through the valve 1% and nozzles 70 and be condensed by the feed water in the chamber 72, which is there by beneficially heated. Steam may also be delivered from the accumulator 0 into the water in the chamber h by a pipe 0 the end Patented May 5, 191%.

of which is below the level of the nozzles 70 and is fitted with a non-return valve p that closes and prevents the back flow of water into the accumulator 0 when the pressure in the accumulator falls. The pipe 0 may pass downwardly through thewa'terin the accu mulator and have openings 0 at the required water level, so that should the water in the accumulator rise above the level it will flow through the openings 0 into the chamber h.

Fig. 2 shows another arrangement ac cording to my invention in which 0 is the heat accumulator, d its submerged nozzles, b the exhaust steam pipe from a high pressure engine, and e'the steam outlet pipe to the low pressure turbine. 7b is a chamber containing feed water which has been sprayed from the pipe 2 and which passes out through the pipe j; the chamber in is formed independently of the accumulator F but is connected to the steam space therein by the pipe Z) in which is disposed the loaded valve on which, allows the passage of steam to said chamber only when the pressure in the steam space of the accumulator rises above the predetermined pressure limitat which it is desired to allow steam to escape therefrom, any steam not condensed in the chamber being free to escape to the atmosphere through the pipe Z.

Fig. 3 shows another to m of the chamber 7L shown in Fig. 2. In this example the pipe Z1 which is connected directly to the steam space in the accumulator c is led into the chamber 7t below the water level and is provided with a non-return valve m, the face of such valve being situated below the water level in order to water seal the valve and prevent leakage of air through the pipe 6 ltO the steam space of the accumulator 0 when the pressure therein falls below the pressure in the chamber h, the valve m being loaded so that it opens only when the pressure in the steam space in the accumulator exceeds the limit of pressure at which it is desired to allow the surplus steam to pass into and be condensed by the feed water entering the chamber 71,.

ll hat I claim is 1. The combination with a steam regenerative accumulator of a liquid heating chamber, an exhaust steam connection to said accumulator, an exhaust steam connection to said chamber, a pressure relieving device arranged to allow the passage of exhaust steam to said liquid heating chamber through said latter connection only when the pressure of said exhaust steam exceeds a predetermined limit and to prevent return flow of steam, and means arranged to prevent liquid passing from the liquid heating chamber to the accumulator.

2. The combination with a steam regen erative accumulator of a liquid heating chamber, exhaust steam connection to said accumulator and chamber, a pressure relieving device which allows the passage of steam to said liquid heating chamber only when the pressure of said steam exceeds a predetermined limit and a non-return valve in the steam connection to said chamber, which valve is water sealed when the pres sure in the exhaust steam connection falls below a predetermined limit.

3. The combination with a steam regen erative accumulator of a liquid heating chamber, exhaust steam connection to said accumulator and chamber, a pressure relieving device which allows the passage of exhaust steam to said liquid heating chamher only when the pressure of said exhaust steam exceeds a predetermined limit, a nonreturn alve in the steam connection to said chamber and an outlet from said cha1nher to atmosphere.

4. The combination with a steam regenerative accumulator of a liquid heating chamber, exhaust steam connection to said accumulator and chamber, a pressure relieving device which allows the passage of steam to said liquid heating chamber only when the pressure of said steam exceeds a predetermined limit, the said pressure re lieving device being water sealed so as to prevent air passing from said chamber to the accumulator and an outlet from said chamber to atmosphere.

5. The combination Off a liquid containing steam regenerative accumulator, submerged nozzles therein, an exhaust steam supply to said nozzles, a liquid heatin chamber, nozzles submerged therein to greater depth than those in the accumulator and a connection between said exhaust steam supply and the I nozzles in said liquid heating chamber.

G. The combination of a liquid containing steam regenerative accumulator, submerged nozzles therein, an exhaust steam supply to said nozzles, a liquid heating chamber, nozzles submerged therein to a greater depth than those in the accumulator and a connection between said exhaust steam supply and the nozzles in said liquid heating chamher said connection being provided with a non-return valve opening toward said chamber.

7. apparatus for condensing exhaust steam and heating liquid comprising a steam regenerative accumulator, a feed water heater, nozzles submerged in liquid in the accumulator, nozzles submerged to a greater depth in the feed water in the heater, a pipe for connecting the accumulator nozzles with the exhaust steam supply, and a pipe connection to the water heater tor relieving the steam pressure by the iassage of steam through the water heater nozzles.

8. Apparatus for condensing exhaust steam and heating liquid comprising a steam regenerative accumulator, a feed water heater, steam heating nozzles submerged in liquid in the accumulator, a valve connecting the steam space of the accumulater with the water heater adapted to open and allow steam to pass to and heat water in the water heater when a predetermined pressure is reached in the accumulator.

9. r-ipparatus for condensing exhaust steam and heating liquid comprising a steam regenerative accumulator, a feed water heater, steam heating nozzles submerged in liquid in the accumulator, a pipe connecting the steam space of the accumulator with the water heater, a pressure relieving device comprising a non-return valve which allows the passage of exhaust steam into the water in the heater when the pressure in the accumulator rises above a predetermined limit.

10. Apparatus for condensing exhaust steam and heating liquid comprising a steam regenerative accumulator, steam heating nozzles submerged in liquid in the accumulator, a chamber adapted to contain liquid to be heated, a pipe leading downward at the required water level in the accumulator to below the water level in the chamber and fitted with a non-return valve,

said pipe being adapted to pass surplus steam and water from the accumulator into said chamber.

11. The combination of a liquid containing steam regenerative accumulator, an exhaust steam supply to said regenerative accumulator, a liquid heating chamber, nozzles submerged therein and a connection between said exhaust steam supply and the nozzles in said liquid heating chamber.

12. The combination of a liquid containing steam regenerative accumulator, an exhaust steam supply to said accumulator, a liquid heating chamber, nozzles submerged therein, a connection between said exhaust steam supply and the nozzles submerged in said heating chamber and a valve in said connection.

13. The combination of a liquid containing steam regenerative accumulator, submerged nozzles therein, an exhaust steam supply to said nozzles, a liquid heating chamber and a connection between the accumulator above the liquid level therein and the liquid space of said heating chamber, the heating chamber end of said connection being submerged to a greater depth than the nozzles in the accumulator.

let. The combination of a liquid containing steam regenerative accumulator, submerged nozzles therein, an exhaust steam supply to said nozzles, a liquid heating chamber and a connection between the accumulator above the liquid level therein and the liquid space of said heating chamber, the heating chamber end of said connection being submerged to a greater depth than the nozzles in the accumulator and a nonreturn valve controlling said connection.

15. The combination with a steam regenerative accumulator of a liquid heating chamber, exhaust steam connection to said accumulator and chamber, submerged steam outlets in the heating chamber adapted to allow the passage of steam to the latter only when the pressure exceeds a predetermined limit, means preventing liquid and steam passing from said heating chamber to the accumulator and a safety valve adapted to allow the escape of steam from the accumulator to the atmosphere when a still higher pressure of steam arises.

16. The combination of a liquid containing steam regenerative accumulator, an ex haust steam supply to said accumulator, a liquid heating chamber, a connection between the accumulator above the liquid level therein and the liquid space of said heating chamber said connection being adapted to relieve the pressure in the accumulator when it exceeds a predetermined pressure and means preventing liquid and steam passing from said heating chamber to the accumulator.

17 The combination of a liquid containing steam regenerative accumulator, an exhaust steam supply to said accumulator, a liquid heating chamber, a connection between the accumulator above the liquid level therein and the liquid space of said heating chamber, said connection being adapted to relieve the pressure in the accumulator when it exceeds a predetermined pressure and in said connection, means adapted to prevent liquid and steam passing from said heating chamber to the accumulator.

Signed at West Hartlepool this twentythird day of February 1911.

DONALD BARNS MORISON.

Witnesses:

HARRY FOTHERGILL, ARTHUR E. JENNER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, .D. C. 

